Monitoring extension for PHP, collects error events and statistics and send them to one of his drivers:
SQLite and MariaDB/MySQL drivers are storing those in a database.
StatsD driver sends them to StatsD using UDP.
Socket driver sends them via UDP or TCP socket using its dedicated protocol.
More drivers to come (SNMP, e-mail, Hadoop,...).

A web frontend exists for manipulating the data stored in database at: https://github.com/patrickallaert/php-apm-web